public Session(GlxContext context, EglGlPlatformSurface.IEglWindowGlPlatformSurfaceInfo info,
IDisposable @lock)
{
_context = context;
_info = info;
_lock = @lock;
}
public Session(GlxContext context, EglGlPlatformSurface.IEglWindowGlPlatformSurfaceInfo info,
IDisposable clearContext)
{
_context = context;
_info = info;
_clearContext = clearContext;
}
public GlxContext(GlxInterface glx, IntPtr handle, GlxDisplay display,
GlxContext sharedWith,
GlVersion version, int sampleCount, int stencilSize,
X11Info x11, IntPtr defaultXid,
bool ownsPBuffer)
{
Handle = handle;
Glx = glx;
_sharedWith = sharedWith;
_x11 = x11;
_defaultXid = defaultXid;
_ownsPBuffer = ownsPBuffer;
Display = display;
Version = version;
SampleCount = sampleCount;
StencilSize = stencilSize;
using (MakeCurrent())
GlInterface = new GlInterface(version, GlxInterface.SafeGetProcAddress);
}
public RenderTarget(GlxContext context, EglGlPlatformSurface.IEglWindowGlPlatformSurfaceInfo info)
{
_context = context;
_info = info;
}
public GlxGlPlatformSurface(GlxDisplay display, GlxContext context, EglGlPlatformSurface.IEglWindowGlPlatformSurfaceInfo info)
{
_display = display;
_context = context;
_info = info;
}
GlxContext CreateContext(IntPtr defaultXid, IGlContext share,
int sampleCount, int stencilSize, bool ownsPBuffer)
{
var sharelist = ((GlxContext)share)?.Handle ?? IntPtr.Zero;
IntPtr handle = default;
GlxContext Create(GlVersion profile)
{
var profileMask = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
if (profile.Type == GlProfileType.OpenGLES)
{
profileMask = GLX_CONTEXT_ES2_PROFILE_BIT_EXT;
}
var attrs = new int[]
{
GLX_CONTEXT_MAJOR_VERSION_ARB, profile.Major,
GLX_CONTEXT_MINOR_VERSION_ARB, profile.Minor,
GLX_CONTEXT_PROFILE_MASK_ARB, profileMask,
0
};
try
{
handle = Glx.CreateContextAttribsARB(_x11.Display, _fbconfig, sharelist, true, attrs);
if (handle != IntPtr.Zero)
{
_version = profile;
return(new GlxContext(new GlxInterface(), handle, this, (GlxContext)share, profile,
sampleCount, stencilSize, _x11, defaultXid, ownsPBuffer));
}
}
catch
{
return(null);
}
return(null);
}
GlxContext rv = null;
if (_version.HasValue)
{
rv = Create(_version.Value);
}
foreach (var v in _probeProfiles)
{
if (v.Type == GlProfileType.OpenGLES &&
!_displayExtensions.Contains("GLX_EXT_create_context_es2_profile"))
{
continue;
}
rv = Create(v);
if (rv != null)
{
_version = v;
break;
}
}
if (rv != null)
{
return(rv);
}
throw new OpenGlException("Unable to create direct GLX context");
}
public GlxDisplay(X11Info x11)
{
_x11 = x11;
var baseAttribs = new[]
{
GLX_X_RENDERABLE, 1,
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
GLX_DOUBLEBUFFER, 1,
GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
GLX_BLUE_SIZE, 8,
GLX_ALPHA_SIZE, 8,
GLX_DEPTH_SIZE, 1,
GLX_STENCIL_SIZE, 8,
};
foreach (var attribs in new[]
{
//baseAttribs.Concat(multiattribs),
baseAttribs,
})
{
var ptr = GlxChooseFBConfig(_x11.Display, x11.DefaultScreen,
attribs, out var count);
for (var c = 0; c < count; c++)
{
var visual = GlxGetVisualFromFBConfig(_x11.Display, ptr[c]);
// We prefer 32 bit visuals
if (_fbconfig == IntPtr.Zero || visual->depth == 32)
{
_fbconfig = ptr[c];
_visual = visual;
if (visual->depth == 32)
{
break;
}
}
}
if (_fbconfig != IntPtr.Zero)
{
break;
}
}
if (_fbconfig == IntPtr.Zero)
{
throw new OpenGlException("Unable to choose FBConfig");
}
if (_visual == null)
{
throw new OpenGlException("Unable to get visual info from FBConfig");
}
if (GlxGetFBConfigAttrib(_x11.Display, _fbconfig, GLX_SAMPLES, out var samples) == 0)
{
SampleCount = samples;
}
if (GlxGetFBConfigAttrib(_x11.Display, _fbconfig, GLX_STENCIL_SIZE, out var stencil) == 0)
{
StencilSize = stencil;
}
ImmediateContext = CreateContext(null);
DeferredContext = CreateContext(ImmediateContext);
ImmediateContext.MakeCurrent();
GlInterface = GlInterface.FromNativeUtf8GetProcAddress(p => GlxGetProcAddress(p));
}